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EP0404641B1 - Verteiler zum Stranggiessen von Stahl - Google Patents

Verteiler zum Stranggiessen von Stahl Download PDF

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Publication number
EP0404641B1
EP0404641B1 EP90401646A EP90401646A EP0404641B1 EP 0404641 B1 EP0404641 B1 EP 0404641B1 EP 90401646 A EP90401646 A EP 90401646A EP 90401646 A EP90401646 A EP 90401646A EP 0404641 B1 EP0404641 B1 EP 0404641B1
Authority
EP
European Patent Office
Prior art keywords
tundish
refractory
perforations
gas
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90401646A
Other languages
English (en)
French (fr)
Other versions
EP0404641A1 (de
Inventor
François Weisang
Pierre Charlery-Adele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to AT90401646T priority Critical patent/ATE97042T1/de
Publication of EP0404641A1 publication Critical patent/EP0404641A1/de
Application granted granted Critical
Publication of EP0404641B1 publication Critical patent/EP0404641B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0401—Moulds provided with a feed head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring

Definitions

  • the invention relates to a continuous casting distributor of steel, typically between ladle and ingot mold, of the type comprising a permanent refractory cast on a sheet metal carcass forming the outer wall of the distributor, and on which a wear refractory is deposited.
  • a continuous casting distributor of steel typically between ladle and ingot mold, of the type comprising a permanent refractory cast on a sheet metal carcass forming the outer wall of the distributor, and on which a wear refractory is deposited.
  • the wear refractory is reconstituted after each operation.
  • the steelmakers use the distributor as a metallurgical tool also making it possible to homogenize the temperature and composition of the liquid metal and to eliminate all or part of the remaining inclusions.
  • numerous improvements have made it possible to improve the flow of liquid metal, and this by modifying the geometry and adding dams (low walls, baffle, etc.).
  • injections of neutral gas argon, helium, nitrogen, etc. are complementary to the current means used to improve the metallurgy of the distributor.
  • a gas injection means comprising a permanent part developing, at the level of the distributor base, into a gas distribution chamber , of which an upper wall with perforations is flower at the bottom of the permanent refractory of the distributor, and a renewable part in the form of a wear refractory plate with gas permeability surmounting overflow said gas distribution chamber.
  • This embodiment makes it possible to constitute a simple distributor, by a conduit embedded in the mass of refractory, opening upwards, without risk of breakthrough in particular at the bottom of distributor, with a simple refractory plate permeable to gas which alone must be changed after each casting. .
  • the distribution chamber extends longitudinally in the transverse direction of the distributor base.
  • the gas permeable refractory plate surmounting the gas distribution chamber is formed by a plate of porous refractory material.
  • the upper wall of the gas distribution chamber advantageously comprises a plate of dense refractory material provided with a plurality of predetermined distributed perforations.
  • the distributed perforations of the upper wall of the distribution chamber are produced according to the technique of through inserts placed before casting of the refractory material forming said upper chamber wall, said inserts being either tubular and placed permanently, or solid like wires and then disposed of before use.
  • the gas distribution chamber is either formed directly by a recess in the permanent distributor refractory material, or comprises a sheet steel casing placed and sealed in a corresponding recess of the distributor refractory material and in the latter case, the sheet steel housing is either open at its upper end and is sealed by the refractory upper wall with distributed perforations of the chamber, or closed at its upper end by a perforated wall, which can itself be covered with '' a dense refractory plate with distributed perforations.
  • the gas distribution chamber is supplied by a tube embedded in a side wall of the distributor and the supply tube of the gas distribution chamber is longitudinally engaged largely inside the distribution chamber.
  • a distributor 1 consists of a rigid metallic outer casing 2, on which is poured a thick wall 3 of permanent dense refractory material which is then itself provided with a coating called wear , made of refractory material 4.
  • at least one gas supply pipe 11 is arranged which opens out through the upper edge 12 of the distributor 1 and engages broadly horizontally in a bottom distribution box. 13 placed in a transverse clearance 14 on the embankment edge 15 of the refractory bottom wall 3 ′, with sealing of said box 13 by a filling mortar 16 and 17.
  • the upper wall 18 of the box is pierced with a multitude of fine holes 19 distributed uniformly and the whole is covered with a gas permeability plate 21 of porous refractory material resting overlapping on the refractory 3 and bonded by mortar seals 22 and 23 with wear coating 4.
  • the gas distribution chamber 13 is placed in a housing formed in the permanent refractory, with a refractory height below this sufficient to avoid any risk of breakthrough in the event that liquid metal is spread in this housing 14.
  • the 16/17 sealing mortar ensures good cohesion between concrete and chamber.
  • the dimensions of the porous plate 21 are such that it overflows on each side so as to ensure a good gas tightness between concrete 3 ′ and plate 21 (a refractory whitewash can be used as glue on the part of the plate in contact with the concrete).
  • the plate 21 is then either sealed at the bottom of the distributor by a mortar 22-23, or taken in the thickness of the wear refractory 4. The positioning of this plate 21 is made before deposition of the wear coating 4 and during this operation, its upper surface through which the gas passes is protected by a sheet of plastic or cardboard during this operation.
  • this plate In order to reduce the cost of this plate which wears out with each pouring of liquid metal, it is advantageous to determine the thickness thereof as a function of the duration of the sequence (for example this plate will be thin for the pouring from a single pocket).
  • the distribution chamber 14 in the form of a sheet steel box has a length equal to the width of the bottom of the distributor 1 and a width sufficient to ensure good efficiency of the process. If necessary, several gas distribution chambers can be fitted in parallel.
  • the upper wall 18 is constituted by a plate pierced with equally distributed holes. According to FIG. 3, this sheet 31 is protected by a dense refractory part 32, in which gas passages 33 are made.
  • the holes 34 of the sheet 31 and the gas passages 33 through this refractory are obtained either by inserts in the form of metal tubes 35 crimped into the sheet ( Figure 4) either by placing sections of son in these holes 34 which will be removed after the initial setting of the refractory or destroyed during cooking (obtaining a directed porosity ).
  • a variant (FIG.
  • the diameter of the passages in the upper plate is less than or equal to 1 mm so as to prevent any penetration of the metal into the distribution chamber in the event that the porous plate is destroyed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Claims (14)

  1. Verteiler zum Stranggießen von Stahl, mit einem permanenten Feuerfestmaterial (3, 3'), das auf einen Blechkörper (2), der die Außenwand des Verteilers bildet, gegossen ist und auf dem eine verbrauchbare feuerfeste Schicht (4) aufgebracht ist, dadurch gekennzeichnet, daß in dem permanenten Feuerfestmaterial eine Gaseinspeisungseinrichtung mit einem ortsfesten Teil angeordnet ist, das in Höhe des Bodens des Verteilers (1) in eine Gasverteilungskammer (13, 52) übergeht, von der eine obere Wand mit Lochungen (18; 31; 51; 72) bündig mit dem aus dem permanenten Feuerfestmaterial bestehenden Boden (3') des Verteilers ist, und daß ein auswechselbares Teil in Form einer Platte (21) aus gasdurchlässigem, verbrauchbarem feuerfesten Material angeordnet ist, das die Gasverteilungskammer, über diese seitlich überstehend, abdeckt.
  2. Verteiler nach Anspruch 1, dadurch gekennzeichnet, daß die gasdurchlässige Platte (21) mit der verbrauchbaren feuerfesten Schicht (4) des Verteilers fest verbunden angebracht ist.
  3. Verteiler nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die gasdurchlässige Platte (21) aus einer Platte aus porösem feuerfesten Material ist.
  4. Verteiler nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die obere Wand der Gasverteilungskammer eine Platte (32, 51) aus dichtem Feuerfestmaterial umfaßt, die mit mehreren vorgefertigten und verteilt angeordneten Lochungen versehen ist.
  5. Verteiler nach Anspruch 4, dadurch gekennzeichnet, daß die verteilt angeordneten Lochungen der oberen Wand der Gasverteilungskammer mit der Technik des Einlegens von Durchgangseinsätzen (35) vor dem Gießen des Feuerfestmaterials, das die obere Wand (32; 51) der Kammer bildet, hergestellt sind, wobei die Einsätze entweder rohrförmig sind und dauerhaft eingesetzt bleiben oder massiv sind, wie Drähte, und vor der Verwendung entfernt werden.
  6. Verteiler nach einem der Ansprüche 1 oder 3 bis 5, dadurch gekennzeichnet, daß die Gasverteilungskammer direkt durch eine Aussparung (71) in dem permanenten Feuerfestmaterial (3') des Verteilers gebildet ist.
  7. Verteiler nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Gasverteilungskammer aus einem Stahlblechgehäuse (13; 52) gebildet ist, das in einer entsprechenden Aussparung (14) des Feuerfestmaterials des Verteilerbodens (3') angeordnet und darin vergossen ist.
  8. Verteiler nach Anspruch 7, dadurch gekennzeichnet, daß das Stahlblechgehäuse an seinem oberen Ende offen ist und durch die obere Wand (32) aus Feuerfestmaterial der Kammer mit verteilt angeordneten Lochungen (33) dicht abgeschlossen wird.
  9. Verteiler nach Anspruch 7, dadurch gekennzeichnet, daß das Stahlbechgehäuse an seinem oberen Ende von einer Wand mit Lochungen (51) abgeschlossen ist.
  10. Verteiler nach einem der Ansprüche 4, 5 oder 9, dadurch gekennzeichnet, daß die obere Wand mit Lochungen (31) des Gehäuses mit einer dichten Platte (32) aus Feuerfestmaterial mit verteilt angeordneten Lochungen (33) bedeckt ist.
  11. Verteiler nach Anspruch 10, dadurch gekennzeichnet, daß die obere Wand mit Lochungen des Gehäuses mit einer Platte mit Lochungen (33) bedeckt ist, die die Lochungen der oberen Wand (31) des Gehäuses verlängern.
  12. Verteiler nach Anspruch 11, dadurch gekennzeichnet, daß die Blechwand (31) des Gehäuses vorspringende Teile (35) an der Stelle jeder Wandlochung aufweist, um beim Gießen die Verlängerungslochungen (33) des die obere Wand der Kammer abdeckenden Feuerfestmaterials (32) herzustellen.
  13. Verteiler nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Gasverteilungskammer (13; 52) über ein in die Seitenwand des Verteilers eingelassenes Rohr (11) versorgt wird.
  14. Verteiler nach Anspruch 13, dadurch gekennzeichnet, daß das Versorgungsrohr (11) in Längsrichtung weit in die Verteilungskammer (13; 52) hineinragt.
EP90401646A 1989-06-16 1990-06-14 Verteiler zum Stranggiessen von Stahl Expired - Lifetime EP0404641B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90401646T ATE97042T1 (de) 1989-06-16 1990-06-14 Verteiler zum stranggiessen von stahl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908008 1989-06-16
FR8908008A FR2652023B1 (fr) 1989-06-16 1989-06-16 Repartiteur de coulee continue d'acier.

Publications (2)

Publication Number Publication Date
EP0404641A1 EP0404641A1 (de) 1990-12-27
EP0404641B1 true EP0404641B1 (de) 1993-11-10

Family

ID=9382802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401646A Expired - Lifetime EP0404641B1 (de) 1989-06-16 1990-06-14 Verteiler zum Stranggiessen von Stahl

Country Status (8)

Country Link
US (1) US5054749A (de)
EP (1) EP0404641B1 (de)
JP (1) JPH0390256A (de)
AT (1) ATE97042T1 (de)
DE (1) DE69004493T2 (de)
ES (1) ES2045845T3 (de)
FR (1) FR2652023B1 (de)
RU (1) RU1838036C (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04219137A (ja) * 1990-04-25 1992-08-10 Nippon Steel Corp 空気浄化材
FR2673552B1 (fr) * 1991-03-06 1995-06-02 Air Liquide Repartiteur de coulee continue d'acier.
JP2647756B2 (ja) * 1991-05-24 1997-08-27 新日本製鐵株式会社 空気清浄力を有する組成物の製造方法
GB9903937D0 (en) * 1999-02-22 1999-04-14 Foseco Int Tundish impact pad
EP1243361A1 (de) * 2001-03-19 2002-09-25 Vesuvius Crucible Company Vorrichtung zum Einleiten von Gasen in eine Metallschmelze
KR100542546B1 (ko) * 2004-05-07 2006-01-11 조선내화 주식회사 분철광석의 환원을 위한 유동층 환원로의 분산판 지지용지주대 구조
CN102847923B (zh) * 2011-06-28 2015-04-22 宝山钢铁股份有限公司 一种低氩耗下稳定提高钢液纯净度的中间包及其冶金方法
CN105598429B (zh) * 2016-02-24 2017-07-04 攀钢集团攀枝花钢铁研究院有限公司 梯度气幕挡墙及其制造方法
US20200316678A1 (en) 2016-05-03 2020-10-08 Refractory Intellectual Property Gmbh & Co. Kg Gas purging device
CN106735146B (zh) * 2016-12-28 2018-09-14 安徽工业大学 一种中间包预应力施加机构的装配方法及防下挠中间包的制备工艺
CN107321945B (zh) * 2017-07-14 2019-04-30 山东钢铁股份有限公司 一种连铸中间包透气上水口座砖吹氩去除夹杂物的方法
PL247643B1 (pl) * 2023-04-06 2025-08-18 Politechnika Czestochowska Kadź pośrednia

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1057489A (en) * 1897-11-08 1913-04-01 Charlie E Mark Apparatus for the treatment of materials.
US1763248A (en) * 1928-06-19 1930-06-10 Pittsburgh Res Corp Electric furnace method
DE2655912C2 (de) * 1976-12-09 1983-11-03 Linde Ag, 6200 Wiesbaden Vorrichtung zum Abschirmen des Gießstrahls einer Gießanlage
US4360190A (en) * 1981-03-16 1982-11-23 Junichi Ato Porous nozzle for molten metal vessel
DE3339586A1 (de) * 1983-11-02 1985-05-23 Didier-Werke Ag, 6200 Wiesbaden Eintauchausguss
DE3412388C2 (de) * 1984-04-03 1986-10-02 Didier-Werke Ag, 6200 Wiesbaden Feuerfester Eintauchausguß
DE3742861C1 (de) * 1987-12-17 1989-05-03 Thyssen Stahl Ag Metallurgisches Gefaess

Also Published As

Publication number Publication date
DE69004493T2 (de) 1994-02-24
JPH0390256A (ja) 1991-04-16
ES2045845T3 (es) 1994-01-16
FR2652023B1 (fr) 1991-10-31
EP0404641A1 (de) 1990-12-27
ATE97042T1 (de) 1993-11-15
US5054749A (en) 1991-10-08
DE69004493D1 (de) 1993-12-16
FR2652023A1 (fr) 1991-03-22
RU1838036C (ru) 1993-08-30

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